sql-vyuka: java/sql-vyuka/web/strom.js@083966fa9d9d

     1 /** Strom je načítaný AJAXem až po načtení stránky, takže je potřeba funkci zavolat ručně */

     2 //pridejUdalost(window,"load",sestavStromy);

     4 function pridejUdalost(o, e, f) {

     5     if (o.addEventListener) {

     6         o.addEventListener(e,f,true);

     7         return true;

     8     } else if (o.attachEvent) {

     9         return o.attachEvent("on" + e, f);

    10     } else {

    11         return false;

    12     }

    13 }

    15 function nastavKonstantu(name, val) {

    16     if (typeof(window[name]) == "undefined" || window[name] == null) {

    17         window[name] = val;

    18     }

    19 }

    21 function rozbalStrom(treeId) {

    22     var ul = document.getElementById(treeId);

    23     if (ul == null) {

    24         return false;

    25     }

    26     rozbalSbalSeznam(ul, nodeOpenClass);

    27 }

    29 function sbalStrom(treeId) {

    30     var ul = document.getElementById(treeId);

    31     if (ul == null) {

    32         return false;

    33     }

    34     rozbalSbalSeznam(ul, nodeClosedClass);

    35 }

    37 function rozbalAzNaPolozku(treeId, itemId) {

    38     var ul = document.getElementById(treeId);

    39     if (ul == null) {

    40         return false;

    41     }

    42     var ret = rozbalSbalSeznam(ul, nodeOpenClass, itemId);

    43     if (ret) {

    44         var o = document.getElementById(itemId);

    45         if (o.scrollIntoView) {

    46             o.scrollIntoView(false);

    47         }

    48     }

    49 }

    51 function rozbalSbalSeznam(ul, cName, itemId) {

    52     if(!ul.childNodes || ul.childNodes.length==0) {

    53         return false;

    54     }

    55     for (var itemi = 0; itemi < ul.childNodes.length; itemi++) {

    56         var item = ul.childNodes[itemi];

    58         if (itemId != null && item.id == itemId) {

    59             return true;

    60         }

    62         if (item.nodeName == "LI") {

    63             var subLists = false;

    64             for (var sitemi = 0; sitemi<item.childNodes.length; sitemi++) {

    65                 var sitem = item.childNodes[sitemi];

    66                 if (sitem.nodeName=="UL") {

    67                     subLists = true;

    68                     var ret = rozbalSbalSeznam(sitem, cName, itemId);

    69                     if (itemId != null && ret) {

    70                         item.className = cName;

    71                         return true;

    72                     }

    73                 }

    74             }

    76             if (subLists && itemId == null) {

    77                 item.className = cName;

    78             }

    79         }

    80     }

    81 }

    83 function sestavStromy() {

    84     nastavKonstantu("treeClass", "strom");

    85     nastavKonstantu("nodeClosedClass", "liClosed");

    86     nastavKonstantu("nodeOpenClass", "liOpen");

    87     nastavKonstantu("nodeBulletClass", "liBullet");

    88     nastavKonstantu("nodeLinkClass", "bullet");

    89     nastavKonstantu("preProcessTrees", true);

    90     if (preProcessTrees) {

    91         if (!document.createElement) {

    92             return;

    93         }

    94         uls = document.getElementsByTagName("ul");

    95         for (var uli = 0; uli < uls.length; uli++) {

    96             var ul = uls[uli];

    97             if (ul.nodeName == "UL" && ul.className == treeClass) {

    98                 zpracujStrom(ul);

    99                 ul.style.display = "block";

   100             }

   101         }

   102     }

   103 }

   105 function zpracujStrom(ul) {

   106     if (!ul.childNodes || ul.childNodes.length==0) {

   107         return;

   108     }

   109     for (var itemi = 0; itemi < ul.childNodes.length; itemi++) {

   110         var item = ul.childNodes[itemi];

   111         if (item.nodeName == "LI") {

   112             var subLists = false;

   113             for (var sitemi = 0; sitemi < item.childNodes.length; sitemi++) {

   114                 var sitem = item.childNodes[sitemi];

   115                 if (sitem.nodeName == "UL") {

   116                     subLists = true;

   117                     zpracujStrom(sitem);

   118                 }

   119             }

   120             var s = document.createElement("span");

   121             var t = '\u00A0';

   122             s.className = nodeLinkClass;

   123             if (subLists) {

   124                 if (item.className == null || item.className == "") {

   125                     item.className = nodeClosedClass;

   126                 }

   127                 if (item.firstChild.nodeName == "#text") {

   128                     t = t + item.firstChild.nodeValue;

   129                     item.removeChild(item.firstChild);

   130                 }

   131                 s.onclick = function() {

   132                     this.parentNode.className = (this.parentNode.className==nodeOpenClass) ? nodeClosedClass : nodeOpenClass;

   133                     return false;

   134                 }

   135             } else {

   136                 item.className = nodeBulletClass;

   137                 s.onclick = function() {

   138                     return false;

   139                 }

   140             }

   141             s.appendChild(document.createTextNode(t));

   142             item.insertBefore(s, item.firstChild);

   143         }

   144     }

   145 }

author	František Kučera <franta-hg@frantovo.cz>
	Tue Jul 14 16:51:24 2009 +0200 (2009-07-14)
changeset 49	083966fa9d9d
child 80	d900e5a112cc
permissions	-rw-r--r--